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(No Model.)

G. WHYSALL & J. A. LAMBIN G.

GAS FURNACE FOR STEAM BOILERS.

No. 398,482. Patented Feb. 26, 1889.

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GEORGE \VHYSALL, OF TOLEDO, OHIO, AND JOHN A. LAMBING, OF VVILKINS- BURG, PENNSYLVANIA.

GASDFURNACE Foe STEAM BOlLEHS.

SPECIFICATION forming part of Letters Patent No. 398,482, dated February 26, 1889. A li ti filed February 27, 1838. Serial No. 265,421. (No model.)

To all whom it may concerm Be it known that we, GEORGE IVHYSALL, of Toledo, in the county of Lucas and State of Ohio, and JOHN A. LAMBING, of ilkinsburg,

in the county of Allegheny and State of Pen11- sylvania, have invented a new and useful Improvement in Gas-Furnaces for Steam-Boilers; and we do hereby declare the following to be a full, clear, and exact description thereof,

reference being had to the accompanying drawings, forming part of this specification, in which Figure 1 is a vertical longitudinal section of a boiler furnace provided with our im- I 5 proved burner apparatus. Fig. 2 is a vertical cross-section on the line a of Fig. 1. Fig. 3 is a detached vertical section of one of the burner-pipes and its as-supply. Fig. 4 is a similar section of a series of these burners.

Like symbols of reference indicate like parts in each;

Our invention is designed to provide improved means for burning gaseither natural gas or artificiallyproduced gas-4n the com- 2 5 bustion-chambers of steam-boiler furnaces, the object being to enable amaxim um of heat to be produced from a small amount of Such burners are especially desirable in places where the natural-gas supply is small,

or where water-gas or other artificial gas is employed, and generally wherever it is desirable to economize the fuel.

In the drawings, 2 rep resents a steam-boiler, which is set in the usual way, having beneath 3 5 it a combustion-chamber, 3, wherein are the usual grate-bars, 4. At the opposite sides of the combustion-chamber are the mouths of the gas pipes or lines 5. These are preferably arranged in parallel vertical series of 4 pipes, opening at their bases and having projecting thereinto the gas'jet nozzles 6 of supply pipes 7 The upper ends of the pipes are bent so as to be directed horizontally toward the opposite side of the combustionchamber. As shown in Fig. 2, there are two series of these burner-pipes, one series on each side of the combustion-chamber. Their oriboiler.

any suitable refractory coveri.ngsuch as firebrick, loam, &c.-but preferably with coalashes. This prevents the access of air to the combustion-chamber through the grate-bars, and affords a bed, which serves to radiate and equalize the heat on the boiler. The peculiar advantage in the use of coal-ashes is that they are easily obtainable, and when it is de sired to use the furnace for the combustion of solid fuel the ashes may easily be raked out, so as to leave the grate-bars free for the coal.

The operation of the furnace is as follows: The gas, having been turned on in the supplypipes by opening the cooks 8, is ignited as it issues from the orifices in the combustionchamber, and the issuing jets from both sides of the combustion'chamber, converging at the middle beneath the boiler, burn with an illtense heat. The airfor combustion isinduced by the gas-jets into the gas-supply pipes or huts, and the mingled air and gas is fed to the combustion-chamber in the 111 ann er usual with burners of the Bunsen pattern. The combustion is very thorough, and the burning gas, following the bottom and sides of the boiler, serves to heat it more quickly and more evenly and with less danger of burning the boiler in spots than in any other furnace known to us. economical and serviceable.

In order to protect the gas pipes or flues from being burned out, we provide them with brick walls orfacings 9 on theinnersides, and where our invention is applied to a battery of 8 5 boilers we prefer to divide the combustionchambers from each other by vertical. partitionwalls of sufficicnt height to protect the gas pipes or flues.

Instead of arranging the gas-sup1; ly pipes or flues vertically, as shown in the drawings, they may be introduced into the combustionchamber horizontally, as shown in dot-ted lines in Fig. 2. In either case the mouths of the gas pipes or flues should be sufliciently 5 above the level of the grate-bars that when coal is used it shall not interfere with or clog the pipes.

We claim 1. A combustion-chamber of a furnace havtoo in g grate-bars and adapted to the combustion of solid fuel, and having a gas-supply pipe or The furnace is therefore very 8o port entering the combustion chamber boiler, substantially as and for the purposes through the Wall thereof, and having its opendescribed. 1

ing at said wall above the normal level of the In testimony whereof we have hereunto set fuel on the grate-bars, substantially as and our hands this 15th day of February, A. I). I 5

5 for the purposes described. 1888.

2. In a stemn-boiler furnace the eonibinzig i 1 1 r tion,With the boiler and the eonibustion-el1am P ber below the boiler, of gas-supply ports or 1 pipes openinginto the-combustion-ehamber 1 Witnesses:

IO on opposite sides thereof, and a flue extend- E. A. GRAYSON, ingfromtheeonibustion-ehmnberbeneath the i GEO. \V. FUNK. 

